Mark Edward Whitacre is an American business executive who came to public attention in 1995 when, as president of the Decatur, Illinois-based BioProducts Division at Archer Daniels Midland (ADM), he became the highest-level corporate executive in U.S. history to become a Federal Bureau of Investigation (FBI) whistleblower. For three years (1992–95), Whitacre acted as a cooperating witness for the FBI, which was investigating ADM for price fixing. In the late 1990s, Whitacre was sentenced to nine years in federal prison for embezzling $9.5 million from ADM at the same time he was assisting the federal price-fixing investigation.

Decatur is the largest city in and the county seat of Macon County, Illinois, United States. The city was founded in 1829 and is situated along the Sangamon River and Lake Decatur in Central Illinois. As of the 2020 census, it had a population of 70,522. It is the seventeenth-most populous city in Illinois. Decatur has an economy based on industrial and agricultural commodity processing and production. The city is home to Millikin University and Richland Community College.